February, ’24] 
CAESAR: CORN BORER CONTROL 
129 
severe cases plant a trap crop of flint corn ten days ahead of normal time and the 
main crop a week or so later than normal. Cut and feed the trap crop to cattle as 
soon as eggs are all laid. If infestation is severe plant dent instead of flint corn. 
In order to get a true perspective of the measures recommended for 
the control of the European Corn Borer in Ontario it is necessary to keep 
in mind the following facts:—(1) That there is only one brood of the 
insect a year in the province; (2) That corn is practically the only host 
plant, though weeds growing in or close alongside the corn field must also 
be considered, as borers often migrate from the com to these; (3) That 
in the worst infested counties—the ones for which the control recom¬ 
mendations are primarily intended—com is grown chiefly for ensilage 
and fodder, even sweet and husking corn stalks being largely used for 
this purpose; (4) That the area devoted to corn in these counties scarcely 
averages ten acres to a hundred-acre farm. 
The above conditions make control less difficult for most of Ontario 
than it is likely to be for many parts of the United States. There are, 
however, two counties, Essex and Kent, in the extreme south-western 
part of the province in which we shall have on a small scale much the 
same problem as you; for these two counties specialize in growing com 
on the ear for seed and feeding purposes, devote a much larger acreage 
per farm to corn growing and instead of using the stalks as feed leave them 
for the most part in the field. 
Control Recommendations for all Parts of the Province Except 
the Two Counties Just Mentioned 
1. Cut the corn as low as the binder will cut it, or, if a hoe is used, 
right at the ground. This is chiefly to make ploughing under of stubble 
easier. 
2. If there is a silo ensile all the corn, if possible, refilling if ne¬ 
cessary. The cutting box and fermentation kill all borers in ensiled 
corn. 
3. If there is no silo, mn all the corn, if practicable, through a 
shredder or cutting box with the knives set close to cut it into fine pieces. 
Feed this to the cattle and if any remains do not leave it in the barn, 
since there will be some living borers in it, but throw it out into the 
manure and be sure this is all hauled out and ploughed under before the 
first of June; for soon after this the moths begin to emerge. If, however, 
there is no cutting box or shredder available, feed the stalks whole to the 
cattle but do not thrown the uneaten portions into the manure. Pile 
them instead by themselves and haul them out from time to time and burn 
